Objective To analyze the epidemiological features of measles and surveillance results since establishing the surveillance systen in 1999, try to acquire scientific gist for measles control and elimination.
Methods To analyze the epidemiological data and surveillant data during 20 years.
Results The average incidence rate of the measles was 6.14 over 100 000 every year in 1984-2003.At the beginning of the district foundation, the average incidence rate of the measles was 24.42 over 100 000, at a high level. After 1987, the incidence rate decreased, but in 1992, 2001, the incidence rate rose up remarkably, got to 12.56 and 21.70 over 100 000 respectively, and measles outbreak occur red with periodic attack. The proportion of the age under 15 years old was 70.42%, but ten years lastly, the proportion of adult (> 15 years old) was growing from 10.50% (1984-1993) to 42.06% (1994-2003). Male accounted for 57.96%.The ratio of temporary residents and permanent residents was 3.18B 1.The cases with immunization blank or unsure occupied 82.54%.Seasonal peak of measles appeared in March to August (69.55%).
Conclusion Since the district foundation the incidence rate of measles dropped considerably, but it appeared periodic and outbreak in small place. The ages of the measles cases were older than before, the model of the age with measles became mixed age rather than young age. The methods to enhance preventive inoculation for transient children, adults in danger, increase vaccine coverage rate, reinforce surveillance and prevent outbreak were our emphasis from now on.
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